Reenforced concrete road construction



P 1935- A. c. FISCHER 2,015,340

REENFORCED CONCRETE ROAD CONSTRUCTION Filed Nov. 29, 1926 Patented Sept.24, 1935 UNITED STATES PATENT O E naauroncan ooNcna'ra norm CONSTRUCTIONAlbert 0. Fischer, Chicago, m, assignor to The Philip CareyManufacturing 00111911 7.; corporation of Ohio 10 Claims. (Cl. 94- 18)My invention relates in general to concrete or the like roadconstruction, and has particular reference to the reenforcement of theconcrete in such a construction, as well as the provision forcontraction joints.

The primary object of my invention is to comblue the reenforcingstructure and the contraction joint structure in such a way that onewill cooperate with the other to not only facilitate building of theroadway, but also to realize the best results from materials used.

In the accompanying drawing I have illustrated the salient features ofthe invention, and in which Figure 1 is a perspective view showing acombined arrangement between a separating stripLfor contraction purposesand the reenforcingrods;

Figure 2 is a similar view showing mo dified form of separating strip. I

Figure 3 is a perspective view-.of-- aaportion of the reenforcing grillcombined with a separating strip. v;

Figure 4 is a plan view showing the separating strip combined with thereenforcing'grill and in combination with reenforcing rods.

Figure 5 is a detailed view in plan showing the connection between thegrill and the supports for the reinforcing rods, and Y Figure 6 is adetailed view in verticalsection showing the separating strip andthegrill as incorporated in the concrete structure of the'roadway.

Referring now to the drawing in detail, I pro- -vide a separating strip5, preferably of metal,

- which isvertically supported by and welded to the reenforcing bars 6.Or else in lieu of the strip 5 I may employ a tongue and'groovestructure I, which is in the form of a strip, having upper and lowerflatportions 8 and 9, yoked together by an intermediate tongue andgroove Ill. In this structure the reenforcing rod iiwould project thruthe intermediate tongue and groove. Either of these forms may be used incombination with the grill work II," by providing'metal cuplike socketsl2 and welding the same to the grill so that the ends of thereenforci'ngrods 6 are received therein as a means of supporting andconnecting the separating strip and the rods to the grill. To compensatefor expansion and contracweakness, so that upon expansion andcontraction of the concrete any cracks tending to occur will be inalignment with the separating strip.

When the tongue and groove separating strip is used the tongue andgroove structure of the 5 same will interlock the concrete together ono'ppositesides of the strip, so that when the cracks occur in alignmentwith the separating strip the tongue and groove will prevent the dividedsections thus formed from riding one upon the other. 10

As a modified form of the same principle the separating strip 5 may beused without the reenforcing rods 6, in which event it would be weldeddirectly to the grill work II, as shown in Figure 3.

I claim: I

1. In a concrete road, sections oi. grill work embedded horizontally inthe concrete and said grill sections being yoked together by reenforcingbars, and a separating strip having its bottom 20 edge resting on saidbars.

2. In a concrete road, sections of grill work embedded horizontally inthe concrete and said grill sections being yoked together by reenforcingbars, and a separating strip vertically supported by said bars entirelyabove the grill work.

3. In a concrete road, sections of grill work embedded horizontally inthe concrete, sockets projecting from the confronting ends of the grillwork sections, reenforcing bars inserted in said sockets and brid ingthe space between the grill sections, and a separating strip supportedby said bars substantially intermediate the ends thereof.

4. In a concreteproad, sections of grill work embedded horizontallyinthe concrete, .sockets projecting from the confronting ends of the grillwork sections, reenforcing bars inserted in said sockets and bridgingthe space between the grill sections, and a separating strip supportedby said bars substantially intermediate the ends thereof, 40 theinserted ends of said bars terminating short of the attached ends of thesockets and leaving spaces in the sockets in which the rods may slideupon expansion and contraction of the concrete.

5. In a concrete road, sections of grill work embedded horizontally inthe concrete, sockets projecting from the confronting ends of the grillwork sections, reenforcing bars inserted in said sockets and bridgingthe space between the grill sections, and a separating strip supportedby said bars substantially intermediate the ends thereof, the insertedends of said bars terminating short of the attached ends of the socketsand leaving spaces in the sockets, said spaces being filled withcompressible material, and the rods being adapted to slide in thesockets against said compressible material substantially as/and for thepurpose 4 described.

embedded horizontally in the concrete. attached to the grill sections,and a Join eiining strip secured in place entirely above said rods.

7. A concrete surfacing structure having reenforcement sections embeddedtherein, and a joint defining strip extending over said reeni'orcement,the reeniorcement including rods for holding the strip in place entirelyabove said reeniorcement.

8. A concrete surfacing structure reentorcement comprising grillsections, and a joint defining strip extending thereover, saidreeniorcement including rods for holding the strip in place entirelyabove said reentorcement.

9. Aconcrete surfacing structure having Joint means and reeniorcementgrill sections embedded therein, said reenter-cement including rodsattached to said grill sections and engaging said Joint means forholding same in position entirely above said reentorcement.

10. In a concrete road, grill sections embedded horizontally in theconcrete, reeni'orclng bars inrposed between the grill sections, aseparating s p supported by the grill sections, and a compression andexpansion means associated with the reeniorcing bars.

ALBERT C. FISCHER.

